NTN - Large Bearings

Double Row Steep Slope Tapered Roller Bearings (Outside Direction)
Sb
Db
r1a
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Fa
Fr
e
Fa
e Fr
X Y X Y
1 Y1 0.67 Y2
static
PorFrYoFa
For values of e, Y2 and Yo
see the table below.
Abutment and fillet dimensions Load
center
Constant Axial load factors Mass
mm mm kg
d a D b S b r as r las
min min min max max e Y 1 Y 2 Y o (approx.)
114 202 20.5 2.5 1 54 0.81 0.83 1.23 0.81 18.2
119 227.5 17.5 2.5 1 146 0.81 0.83 1.23 0.81 23.6
124 228 18.5 2.5 1 153 0.81 0.83 1.23 0.81 22
124 223.5 22.5 2.5 1 152 0.81 0.83 1.23 0.81 25
129 221 16 2.5 1.5 143.5 0.74 0.92 1.36 0.90 21.2
139 221 16 2.5 2 143.5 0.74 0.92 1.36 0.90 19.9
142 220.5 21 2.5 1 192.5 1.10 0.61 0.91 0.60 17.8
148 268.5 21.5 3 1.5 176.5 0.81 0.83 1.23 0.81 34.5
148 270 24.5 3 1.5 184.5 0.83 0.81 1.21 0.79 45.8
154 245 18 2.5 1.5 155.5 0.74 0.92 1.36 0.90 26.6
177 313 30 4 1.5 219 0.81 0.83 1.24 0.82 66
248 363.5 30 3 1.5 241 0.80 0.85 1.26 0.83 73.9
288 494 55.5 5 2 364.5 0.94 0.71 1.06 0.70 248
327 530 46.5 4 2 414 1.09 0.62 0.92 0.61 227
339.5 531.5 46 4 2 351 0.81 0.84 1.25 0.82 248
406 633 46 6 3 370.5 0.70 0.97 1.44 0.94 420
561.5 718.5 24 5 1.5 399.5 0.70 0.97 1.44 0.94 268
B-171